The device refers to a set of items in a mosaic layout, for covering tree and plant-wells. The items, that can be decorated with engravings, logotypes etc. can be joined together by means of a m ale-female system, optionally with staples, allowing holes for trainers, and the mosaic is adaptable to the stalk of the plant, to uneven land and provides for installing irrigation.

This is for application in gardening, arboriculture and horticulture.

The state of art as regards covering tree and plant-wells includes the use of metal grid-type items, cement or concrete pieces, in some cases set out in mosaic pattern, as described in patent ES 2154214.

The greatest drawback about the items described in ES 2154214 is the fact of not being secured to one another, since the acts of vandalism so customary in the urban setting mean a danger for the conservation of unsecured items in tree wells. Furthermore, through being items of an artistic nature, these would doubtlessly be subject to vandalism in public spaces without exhaustive supervision.

Another disadvantage of the items commonly used in mosaic pattern such as simple paving stones and also the ones described in ES 2154214 is the failure to provide holes in the well cover, for an irrigation device avoiding the need to locate the irrigation hose over the opening in the well cover every time that the plant needs to be watered.

Normally the use of trainers on growing trees or bushes or for forming climbing plants is limited to the open space in the area where the well is left open, that is, where the stalk or trunk emerges, this being a great impediment for locating trainers which need to be placed at a point far enough away from the well opening area, and that is still covered by the grid, such as would for example be necessary for the artistic control of growth of ivies, oleanders etc., or for physically more stable securing, of larger-diameter palm trees, due to the greater moment of inertia of the trainers located at a greater distance from the trunk, a layout which is not possible with the present methods for covering tree wells, thus meaning that large trees that require trainers have to have these set on the outside of the wells (since the incorporation of trainers in wells has not up to now been envisaged) with the consequent loss of suitable aesthetics. In other words, well covers could not go any further than was allowed by the trainers of large trees.

On the other hand, the structures of tree and plant-well covers on which mosaic items are rested, such as the one described in ES 2154214, have a utility restricted by the danger of breakage of the central items, which are supported indirectly, without being in contact with the ground, by the structure of the base in which the items fit. This means a great limitation of their use, especially in cases of covering relatively large-sized tree wells (for palm trees, carob trees etc.) since there is a great possibility of the mosaic breaking, through the central items being physically "in the air" (held by adjacent items).

It is also difficult for the construction described in ES 2154214 to be held by the earth below, since the earth movements when drying and being moistened mean that the assembly described in ES 2154214 cannot be considered in any way to be held by the earth at all times, and this constitutes a fundamental difference from the present invention.

Furthermore it is common for surface roots of trees and bushes to protrude from the base of earth. To solve this difficulty involved in many systems of protecting tree wells, this invention proposes the vertical adaptation of the parts of the mosaic so that the outer surface of the mosaic (the side seen from the pavement or street) is flat or uniform, or has a certain decorative form, such as undulations, engravings, high-reliefs or bas-reliefs.

This invention consists of a set of items made of strong materials (such as concrete, cement, wood, glass fibre, plastics, metals etc,) which allow tree and plant-wells to be covered so that the total surface area to be spanned is extremely easy to cover with no difficulty other than adding a greater number of items (with no need for prefabricated moulds to house all the pieces, unlike the present technique indicated in the inventions named above), the parts being linked in a male-female system and/or also optionally and preferably by means of staples which may be in a horseshoe shape and be made of metal.

The items remain in contact with the ground-earth, by means of adjustments in their vertical length adaptable to any unevenness in the land, for example, roots, so that this leaves a surface flush with the pavement or paving where these are set, this upper surface of the mosaic not necessarily being flat, but being able to be undulating, spiral or have other decorative shapes and each item, or at least some of these, to have artistic items by means of engravings, drawings or rivets, such as for example the coat of arms or flag of the place where these are used (after obtaining the required permission), children's drawings, etc..

The items can also be trimmed when required, for example in the event of it being impossible to overcome any unevenness of the land through the pressure of the mosaic part.

The mosaic also allows water through by means of at least some piece with holes going through the vertical and or horizontal length of the item, preferably on one of its edges.

There are also a certain optional number of holes going vertically through the items, for fitting trainers which allow the growing plant to be secured, or alternatively, to give artistic form to the tree, climbing plant or bush, that is the common purpose of trainers. One additional item of the pieces consists in holes which go through one or more items, in parallel or perpendicular to the surface determined by the earth, for fitting hoses which can be installed or removed for irrigation purposes or automatic irrigation systems (for example, fixed hoses).

As an example 6 sheets of drawings are given with 11 figures to illustrate the present invention, without implying any limitation thereto.

• Figure 1 shows a profile (9) and plan view (10) of a piece of the mosaic. It can be seen in the plan view (10) that the item is rectangular in shape.
• Figure 2 also shows two different profiles (11, 12) of the same item (like a table) in which one can see peaks which constitute the base for making the male-female couplings of the items.
• Figure 3 shows a part which in plan view (14) is square (with the exception of small rims meant for the couplings) and in profile (13) this is rectangular (with the exception of certain tips meant for the male/female couplings).
• Figure 4 shows a detail (15) of a piece, which can have any size, within reasonable bounds, and which has the coupling rims anywhere along the vertical length of the item, considering this to be vertical when it is properly placed in the mosaic. It is shown that the items (16) can be fitted with a lower system in stake shape to be stuck into the ground and also a rim, which can be annular in shape, preventing the item from sinking too far into the earth.
• Figure 5 shows the dimensions and the upper view of a full tree well, with rectangular items of different sizes, chosen at random insofar as is reasonable.
• Figure 6 is unlike figure 5 in that the opening is circular (20 cm. in diameter) unlike the practically square opening (with rounded corners) of Figure 5.
• Figures 7 and 8 show how the opening of the tree well can be off centre in respect of the centre of the mosaic which is shown square, as an illustration and without implying any limitation, since the full mosaic could be diamond, triangular, polygonal or irregular-shaped etc..
• Figure 9 shows a full layout of a tree well with:
  • (1) items of the mosaic
  • (2) trainers
  • (3) plant
  • (4) holes for letting in water/air
  • (5) holes for the trainers to go through the items
  • (6) opening in the tree well
  • (7) staples stuck between the metal items of the mosaic
  • (8) hose inserted under the tree well grill by means of a hole placed for this purpose.
• Figure 10 shows a particular form of embodiment in which the surface of the items is convex (17) in the outer square of the tree well (the particular pieces are not shown), alternating with a concave part (26) in the middle square of the mosaic and later the inner square where the hole of the tree well is located is flat.
• Figure 11 shows the layout (by means of a cross-section) of items (21), (24) and (25) in the case of a root (18) or any other item making the surface (20) of the land (19) irregular. We also observe the male-female coupling of the items. It also shows that the upper surface of the mosaic items can have different decorative shapes, as those formed by the bell shape of the piece thanks to undulations (22) and (23).